How can I get money out of my phone?

I'm curious, how exactly can one withdraw funds from their phone? Is there a specific app or service that allows for this? And what are the steps involved in the process? I'm assuming it's related to some form of digital currency or mobile banking, but I'd like to know more about the specifics. Is there a limit to how much money can be withdrawn, and are there any fees associated with the transaction? Additionally, is there a level of security involved to ensure that the funds are being transferred safely and securely? I'd appreciate any clarification on these points.